512 lines
22 KiB
Python
512 lines
22 KiB
Python
# ***** BEGIN GPL LICENSE BLOCK *****
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#
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# This program is free software; you can redistribute it and/or
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# modify it under the terms of the GNU General Public License
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# as published by the Free Software Foundation; either version 2
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# of the License, or (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software Foundation,
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# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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#
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# ***** END GPL LICENSE BLOCK *****
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# <pep8 compliant>
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# Populate a template file (POT format currently) from Blender RNA/py/C data.
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# Note: This script is meant to be used from inside Blender!
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import os
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import bpy
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from mathutils import (
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Euler,
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Matrix,
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Vector,
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)
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INTERN_PREVIEW_TYPES = {'MATERIAL', 'LIGHT', 'WORLD', 'TEXTURE', 'IMAGE'}
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OBJECT_TYPES_RENDER = {'MESH', 'CURVE', 'SURFACE', 'META', 'FONT'}
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def ids_nolib(bids):
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return (bid for bid in bids if not bid.library)
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def rna_backup_gen(data, include_props=None, exclude_props=None, root=()):
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# only writable properties...
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for p in data.bl_rna.properties:
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pid = p.identifier
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if pid == "rna_type" or pid == "original":
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continue
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path = root + (pid,)
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if include_props is not None and path not in include_props:
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continue
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if exclude_props is not None and path in exclude_props:
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continue
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val = getattr(data, pid)
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if val is not None and p.type == 'POINTER':
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# recurse!
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yield from rna_backup_gen(val, include_props, exclude_props, root=path)
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elif data.is_property_readonly(pid):
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continue
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else:
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yield path, val
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def rna_backup_restore(data, backup):
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for path, val in backup:
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dt = data
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for pid in path[:-1]:
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dt = getattr(dt, pid)
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setattr(dt, path[-1], val)
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def do_previews(do_objects, do_collections, do_scenes, do_data_intern):
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import collections
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# Helpers.
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RenderContext = collections.namedtuple("RenderContext", (
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"scene", "world", "camera", "light", "camera_data", "light_data", "image", # All those are names!
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"backup_scene", "backup_world", "backup_camera", "backup_light", "backup_camera_data", "backup_light_data",
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))
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RENDER_PREVIEW_SIZE = bpy.app.render_preview_size
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def render_context_create(engine, objects_ignored):
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if engine == '__SCENE':
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backup_scene, backup_world, backup_camera, backup_light, backup_camera_data, backup_light_data = [()] * 6
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scene = bpy.context.window.scene
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exclude_props = {('world',), ('camera',), ('tool_settings',), ('preview',)}
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backup_scene = tuple(rna_backup_gen(scene, exclude_props=exclude_props))
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world = scene.world
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camera = scene.camera
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if camera:
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camera_data = camera.data
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else:
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backup_camera, backup_camera_data = [None] * 2
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camera_data = bpy.data.cameras.new("TEMP_preview_render_camera")
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camera = bpy.data.objects.new("TEMP_preview_render_camera", camera_data)
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camera.rotation_euler = Euler((1.1635528802871704, 0.0, 0.7853981852531433), 'XYZ') # (66.67, 0.0, 45.0)
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scene.camera = camera
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scene.collection.objects.link(camera)
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# TODO: add light if none found in scene?
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light = None
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light_data = None
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else:
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backup_scene, backup_world, backup_camera, backup_light, backup_camera_data, backup_light_data = [None] * 6
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scene = bpy.data.scenes.new("TEMP_preview_render_scene")
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world = bpy.data.worlds.new("TEMP_preview_render_world")
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camera_data = bpy.data.cameras.new("TEMP_preview_render_camera")
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camera = bpy.data.objects.new("TEMP_preview_render_camera", camera_data)
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light_data = bpy.data.lights.new("TEMP_preview_render_light", 'SPOT')
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light = bpy.data.objects.new("TEMP_preview_render_light", light_data)
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objects_ignored.add((camera.name, light.name))
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scene.world = world
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camera.rotation_euler = Euler((1.1635528802871704, 0.0, 0.7853981852531433), 'XYZ') # (66.67, 0.0, 45.0)
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scene.camera = camera
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scene.collection.objects.link(camera)
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light.rotation_euler = Euler((0.7853981852531433, 0.0, 1.7453292608261108), 'XYZ') # (45.0, 0.0, 100.0)
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light_data.falloff_type = 'CONSTANT'
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light_data.spot_size = 1.0471975803375244 # 60
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scene.collection.objects.link(light)
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scene.render.engine = 'CYCLES'
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scene.cycles.film_transparent = True
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# TODO: define Cycles world?
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scene.render.image_settings.file_format = 'PNG'
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scene.render.image_settings.color_depth = '8'
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scene.render.image_settings.color_mode = 'RGBA'
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scene.render.image_settings.compression = 25
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scene.render.resolution_x = RENDER_PREVIEW_SIZE
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scene.render.resolution_y = RENDER_PREVIEW_SIZE
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scene.render.resolution_percentage = 100
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scene.render.filepath = os.path.join(bpy.app.tempdir, 'TEMP_preview_render.png')
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scene.render.use_overwrite = True
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scene.render.use_stamp = False
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image = bpy.data.images.new("TEMP_render_image", RENDER_PREVIEW_SIZE, RENDER_PREVIEW_SIZE, alpha=True)
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image.source = 'FILE'
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image.filepath = scene.render.filepath
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return RenderContext(
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scene.name, world.name if world else None, camera.name, light.name if light else None,
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camera_data.name, light_data.name if light_data else None, image.name,
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backup_scene, backup_world, backup_camera, backup_light, backup_camera_data, backup_light_data,
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)
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def render_context_delete(render_context):
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# We use try/except blocks here to avoid crash, too much things can go wrong, and we want to leave the current
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# .blend as clean as possible!
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success = True
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scene = bpy.data.scenes[render_context.scene, None]
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try:
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if render_context.backup_scene is None:
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scene.world = None
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scene.camera = None
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if render_context.camera:
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scene.collection.objects.unlink(bpy.data.objects[render_context.camera, None])
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if render_context.light:
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scene.collection.objects.unlink(bpy.data.objects[render_context.light, None])
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bpy.data.scenes.remove(scene, do_unlink=True)
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scene = None
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else:
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rna_backup_restore(scene, render_context.backup_scene)
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except Exception as e:
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print("ERROR:", e)
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success = False
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if render_context.world is not None:
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try:
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world = bpy.data.worlds[render_context.world, None]
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if render_context.backup_world is None:
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if scene is not None:
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scene.world = None
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world.user_clear()
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bpy.data.worlds.remove(world)
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else:
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rna_backup_restore(world, render_context.backup_world)
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except Exception as e:
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print("ERROR:", e)
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success = False
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if render_context.camera:
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try:
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camera = bpy.data.objects[render_context.camera, None]
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if render_context.backup_camera is None:
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if scene is not None:
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scene.camera = None
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scene.collection.objects.unlink(camera)
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camera.user_clear()
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bpy.data.objects.remove(camera)
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bpy.data.cameras.remove(bpy.data.cameras[render_context.camera_data, None])
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else:
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rna_backup_restore(camera, render_context.backup_camera)
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rna_backup_restore(bpy.data.cameras[render_context.camera_data, None],
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render_context.backup_camera_data)
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except Exception as e:
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print("ERROR:", e)
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success = False
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if render_context.light:
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try:
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light = bpy.data.objects[render_context.light, None]
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if render_context.backup_light is None:
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if scene is not None:
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scene.collection.objects.unlink(light)
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light.user_clear()
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bpy.data.objects.remove(light)
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bpy.data.lights.remove(bpy.data.lights[render_context.light_data, None])
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else:
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rna_backup_restore(light, render_context.backup_light)
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rna_backup_restore(bpy.data.lights[render_context.light_data, None], render_context.backup_light_data)
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except Exception as e:
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print("ERROR:", e)
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success = False
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try:
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image = bpy.data.images[render_context.image, None]
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image.user_clear()
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bpy.data.images.remove(image)
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except Exception as e:
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print("ERROR:", e)
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success = False
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return success
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def object_bbox_merge(bbox, ob, ob_space, offset_matrix):
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# Take collections instances into account (including linked one in this case).
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if ob.type == 'EMPTY' and ob.instance_type == 'COLLECTION':
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grp_objects = tuple((ob.name, ob.library.filepath if ob.library else None) for ob in ob.instance_collection.all_objects)
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if (len(grp_objects) == 0):
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ob_bbox = ob.bound_box
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else:
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coords = objects_bbox_calc(ob_space, grp_objects,
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Matrix.Translation(ob.instance_collection.instance_offset).inverted())
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ob_bbox = ((coords[0], coords[1], coords[2]), (coords[21], coords[22], coords[23]))
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elif ob.bound_box:
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ob_bbox = ob.bound_box
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else:
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ob_bbox = ((-ob.scale.x, -ob.scale.y, -ob.scale.z), (ob.scale.x, ob.scale.y, ob.scale.z))
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for v in ob_bbox:
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v = offset_matrix @ Vector(v) if offset_matrix is not None else Vector(v)
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v = ob_space.matrix_world.inverted() @ ob.matrix_world @ v
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if bbox[0].x > v.x:
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bbox[0].x = v.x
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if bbox[0].y > v.y:
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bbox[0].y = v.y
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if bbox[0].z > v.z:
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bbox[0].z = v.z
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if bbox[1].x < v.x:
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bbox[1].x = v.x
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if bbox[1].y < v.y:
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bbox[1].y = v.y
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if bbox[1].z < v.z:
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bbox[1].z = v.z
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def objects_bbox_calc(camera, objects, offset_matrix):
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bbox = (Vector((1e24, 1e24, 1e24)), Vector((-1e24, -1e24, -1e24)))
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for obname, libpath in objects:
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ob = bpy.data.objects[obname, libpath]
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object_bbox_merge(bbox, ob, camera, offset_matrix)
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# Our bbox has been generated in camera local space, bring it back in world one
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bbox[0][:] = camera.matrix_world @ bbox[0]
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bbox[1][:] = camera.matrix_world @ bbox[1]
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cos = (
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bbox[0].x, bbox[0].y, bbox[0].z,
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bbox[0].x, bbox[0].y, bbox[1].z,
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bbox[0].x, bbox[1].y, bbox[0].z,
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bbox[0].x, bbox[1].y, bbox[1].z,
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bbox[1].x, bbox[0].y, bbox[0].z,
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bbox[1].x, bbox[0].y, bbox[1].z,
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bbox[1].x, bbox[1].y, bbox[0].z,
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bbox[1].x, bbox[1].y, bbox[1].z,
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)
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return cos
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def preview_render_do(render_context, item_container, item_name, objects, offset_matrix=None):
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scene = bpy.data.scenes[render_context.scene, None]
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if objects is not None:
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camera = bpy.data.objects[render_context.camera, None]
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light = bpy.data.objects[render_context.light, None] if render_context.light is not None else None
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cos = objects_bbox_calc(camera, objects, offset_matrix)
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loc, ortho_scale = camera.camera_fit_coords(bpy.context.depsgraph, cos)
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camera.location = loc
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# Set camera clipping accordingly to computed bbox.
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min_dist = 1e24
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max_dist = -1e24
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for co in zip(*(iter(cos),) * 3):
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dist = (Vector(co) - loc).length
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if dist < min_dist:
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min_dist = dist
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if dist > max_dist:
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max_dist = dist
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camera.data.clip_start = min_dist / 2
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camera.data.clip_end = max_dist * 2
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if light:
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loc, ortho_scale = light.camera_fit_coords(bpy.context.depsgraph, cos)
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light.location = loc
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scene.update()
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bpy.ops.render.render(write_still=True)
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image = bpy.data.images[render_context.image, None]
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item = getattr(bpy.data, item_container)[item_name, None]
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image.reload()
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item.preview.image_size = (RENDER_PREVIEW_SIZE, RENDER_PREVIEW_SIZE)
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item.preview.image_pixels_float[:] = image.pixels
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# And now, main code!
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do_save = True
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if do_data_intern:
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bpy.ops.wm.previews_clear(id_type=INTERN_PREVIEW_TYPES)
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bpy.ops.wm.previews_ensure()
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render_contexts = {}
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objects_ignored = set()
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collections_ignored = set()
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prev_scenename = bpy.context.window.scene.name
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if do_objects:
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prev_shown = {ob.name: ob.hide_render for ob in ids_nolib(bpy.data.objects)}
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for ob in ids_nolib(bpy.data.objects):
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if ob in objects_ignored:
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continue
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ob.hide_render = True
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for root in ids_nolib(bpy.data.objects):
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if root.name in objects_ignored:
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continue
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if root.type not in OBJECT_TYPES_RENDER:
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continue
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objects = ((root.name, None),)
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render_context = render_contexts.get('CYCLES', None)
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if render_context is None:
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render_context = render_context_create('CYCLES', objects_ignored)
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render_contexts['CYCLES'] = render_context
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scene = bpy.data.scenes[render_context.scene, None]
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bpy.context.window.scene = scene
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for obname, libpath in objects:
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ob = bpy.data.objects[obname, libpath]
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if obname not in scene.objects:
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scene.collection.objects.link(ob)
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ob.hide_render = False
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scene.update()
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preview_render_do(render_context, 'objects', root.name, objects)
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# XXX Hyper Super Uber Suspicious Hack!
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# Without this, on windows build, script excepts with following message:
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# Traceback (most recent call last):
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# File "<string>", line 1, in <module>
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# File "<string>", line 451, in <module>
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# File "<string>", line 443, in main
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# File "<string>", line 327, in do_previews
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# OverflowError: Python int too large to convert to C long
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# ... :(
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scene = bpy.data.scenes[render_context.scene, None]
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for obname, libpath in objects:
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ob = bpy.data.objects[obname, libpath]
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scene.collection.objects.unlink(ob)
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ob.hide_render = True
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for ob in ids_nolib(bpy.data.objects):
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is_rendered = prev_shown.get(ob.name, ...)
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if is_rendered is not ...:
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ob.hide_render = is_rendered
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if do_collections:
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for grp in ids_nolib(bpy.data.collections):
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if grp.name in collections_ignored:
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continue
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# Here too, we do want to keep linked objects members of local collection...
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objects = tuple((ob.name, ob.library.filepath if ob.library else None) for ob in grp.objects)
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render_context = render_contexts.get('CYCLES', None)
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if render_context is None:
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render_context = render_context_create('CYCLES', objects_ignored)
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render_contexts['CYCLES'] = render_context
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scene = bpy.data.scenes[render_context.scene, None]
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bpy.context.window.scene = scene
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bpy.ops.object.collection_instance_add(collection=grp.name)
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grp_ob = next((ob for ob in scene.objects if ob.instance_collection and ob.instance_collection.name == grp.name))
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grp_obname = grp_ob.name
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scene.update()
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offset_matrix = Matrix.Translation(grp.instance_offset).inverted()
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preview_render_do(render_context, 'collections', grp.name, objects, offset_matrix)
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scene = bpy.data.scenes[render_context.scene, None]
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scene.collection.objects.unlink(bpy.data.objects[grp_obname, None])
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bpy.context.window.scene = bpy.data.scenes[prev_scenename, None]
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for render_context in render_contexts.values():
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if not render_context_delete(render_context):
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do_save = False # Do not save file if something went wrong here, we could 'pollute' it with temp data...
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if do_scenes:
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for scene in ids_nolib(bpy.data.scenes):
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has_camera = scene.camera is not None
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bpy.context.window.scene = scene
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render_context = render_context_create('__SCENE', objects_ignored)
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scene.update()
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objects = None
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if not has_camera:
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# We had to add a temp camera, now we need to place it to see interesting objects!
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objects = tuple((ob.name, ob.library.filepath if ob.library else None) for ob in scene.objects
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if (not ob.hide_render) and (ob.type in OBJECT_TYPES_RENDER))
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preview_render_do(render_context, 'scenes', scene.name, objects)
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if not render_context_delete(render_context):
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do_save = False
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bpy.context.window.scene = bpy.data.scenes[prev_scenename, None]
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if do_save:
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print("Saving %s..." % bpy.data.filepath)
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try:
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bpy.ops.wm.save_mainfile()
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except Exception as e:
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# Might fail in some odd cases, like e.g. in regression files we have glsl/ram_glsl.blend which
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# references an inexistent texture... Better not break in this case, just spit error to console.
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print("ERROR:", e)
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else:
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print("*NOT* Saving %s, because some error(s) happened while deleting temp render data..." % bpy.data.filepath)
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def do_clear_previews(do_objects, do_collections, do_scenes, do_data_intern):
|
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if do_data_intern:
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bpy.ops.wm.previews_clear(id_type=INTERN_PREVIEW_TYPES)
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|
|
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if do_objects:
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for ob in ids_nolib(bpy.data.objects):
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ob.preview.image_size = (0, 0)
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|
|
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if do_collections:
|
|
for grp in ids_nolib(bpy.data.collections):
|
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grp.preview.image_size = (0, 0)
|
|
|
|
if do_scenes:
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|
for scene in ids_nolib(bpy.data.scenes):
|
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scene.preview.image_size = (0, 0)
|
|
|
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print("Saving %s..." % bpy.data.filepath)
|
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bpy.ops.wm.save_mainfile()
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|
|
|
|
|
def main():
|
|
try:
|
|
import bpy
|
|
except ImportError:
|
|
print("This script must run from inside blender")
|
|
return
|
|
|
|
import sys
|
|
import argparse
|
|
|
|
# Get rid of Blender args!
|
|
argv = sys.argv[sys.argv.index("--") + 1:] if "--" in sys.argv else []
|
|
|
|
parser = argparse.ArgumentParser(description="Use Blender to generate previews for currently open Blender file's items.")
|
|
parser.add_argument('--clear', default=False, action="store_true",
|
|
help="Clear previews instead of generating them.")
|
|
parser.add_argument('--no_backups', default=False, action="store_true",
|
|
help="Do not generate a backup .blend1 file when saving processed ones.")
|
|
parser.add_argument('--no_scenes', default=True, action="store_false",
|
|
help="Do not generate/clear previews for scene IDs.")
|
|
parser.add_argument('--no_collections', default=True, action="store_false",
|
|
help="Do not generate/clear previews for collection IDs.")
|
|
parser.add_argument('--no_objects', default=True, action="store_false",
|
|
help="Do not generate/clear previews for object IDs.")
|
|
parser.add_argument('--no_data_intern', default=True, action="store_false",
|
|
help="Do not generate/clear previews for mat/tex/image/etc. IDs (those handled by core Blender code).")
|
|
args = parser.parse_args(argv)
|
|
|
|
orig_save_version = bpy.context.preferences.filepaths.save_version
|
|
if args.no_backups:
|
|
bpy.context.preferences.filepaths.save_version = 0
|
|
elif orig_save_version < 1:
|
|
bpy.context.preferences.filepaths.save_version = 1
|
|
|
|
if args.clear:
|
|
print("clear!")
|
|
do_clear_previews(do_objects=args.no_objects, do_collections=args.no_collections, do_scenes=args.no_scenes,
|
|
do_data_intern=args.no_data_intern)
|
|
else:
|
|
print("render!")
|
|
do_previews(do_objects=args.no_objects, do_collections=args.no_collections, do_scenes=args.no_scenes,
|
|
do_data_intern=args.no_data_intern)
|
|
|
|
# Not really necessary, but better be consistent.
|
|
bpy.context.preferences.filepaths.save_version = orig_save_version
|
|
|
|
|
|
if __name__ == "__main__":
|
|
print("\n\n *** Running {} *** \n".format(__file__))
|
|
print(" *** Blend file {} *** \n".format(bpy.data.filepath))
|
|
main()
|
|
bpy.ops.wm.quit_blender()
|